DB接続エラー<br>Error:SQLSTATE[HY000] [1040] Too many connections<pre>array(5) {
  ["user"]=>
  string(10) "user_tsweb"
  ["pass"]=>
  string(8) "HRDwCt8G"
  ["db_name"]=>
  string(5) "tsweb"
  ["host"]=>
  string(67) "websitedb-mysql8-4-11.ciibpfsc8wjg.ap-northeast-1.rds.amazonaws.com"
  ["port"]=>
  string(4) "3306"
}
</pre>